Analysis
- max time kernel
90s - max time network
99s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
11/06/2024, 15:22
General
- Target d10015cb022bf09a46bfc6236a6fe55e2fd2866fd7ce86e48e041ed09ebc3fe3.exe
- Size 1.6MB
- Sample240611-sr3bhasbqm
- SHA256 d10015cb022bf09a46bfc6236a6fe55e2fd2866fd7ce86e48e041ed09ebc3fe3
Malware Config
Extracted
-
stealc
Extracted
-
vidar
-
https://t.me/r8z0l
-
https://steamcommunity.com/profiles/76561199698764354
-
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
- Detect Vidar Stealer 8 IoCs
- Stealc
Stealc is an infostealer written in C++.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of SetThreadContext 1 IoCs
- Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\d10015cb022bf09a46bfc6236a6fe55e2fd2866fd7ce86e48e041ed09ebc3fe3.exe"C:\Users\Admin\AppData\Local\Temp\d10015cb022bf09a46bfc6236a6fe55e2fd2866fd7ce86e48e041ed09ebc3fe3.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat42B6.tmpC:\Users\Admin\AppData\Local\Temp\kat42B6.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
kat42B6.tmp
memory/3908-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3908-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3908-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3908-15-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3908-16-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3908-18-0x000000001B8A0000-0x000000001BAFF000-memory.dmp
memory/3908-33-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3908-34-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4696-0-0x00000000023D0000-0x00000000023D1000-memory.dmp
memory/4696-1-0x0000000003F80000-0x0000000004090000-memory.dmp
memory/4696-9-0x0000000000400000-0x0000000000594000-memory.dmp